5. Christmas Tree Rainbow LED for micro:bit

5.1. Introduction


The christmas tree rainbow LED, with 6 coding LEDs,can help you to decorate a beautiful chritmas night.

5.2. Features


  • In christmas tree shape, adapt to the christmas scene

  • With coding rainbow LED for any colour you like.

  • With crocodile clip lines, no need for a expansion board

5.3. Parameters


|Items|Parameters| |:-:|:-:| |Name|Christmas Tree Rainbow LED| |SKU| EF03420| |Input Voltage|DC 3.3~5.0V| |Size|75.93mm X 50.00mm| |Net Weight|6.5g|

5.4. Quick Start


Preparation

  • 1 x Chritmas Tree Rainbow LED

  • 3 x crocodile clip lines(Please prepare by yourself)

  • 1 x micro:bit(Please prepare by yourself)

Hardware Connect

  • Connect the black crocodile clip line to the GND port of the micro:bit, the other side of the black crocodile clip line to the G port of the christmas tree rainbow LED.

  • Connect the red crocodile clip line to the 3V port of the micro:bit, the other side of the red crocodile clip line to the V port of the christmas tree rainbow LED.

  • Connect the yellow crocodile clip line to the 0 port of the micro:bit, the other side of the yellow crocodile clip line to the S port of the christmas tree rainbow LED.

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Software

Step 1

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  • Click on “Advanced” for more code blocks and click the Extensions at the bottom of the column.

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  • Serch “neopixel” and add neopixel as a codebase.

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Step 2

  • Snap “set strip to neopixel at pin with leds as” from neopixel into the on start. Set pin to P1 with 6 LEDs in RGB pattern.

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Step 3

  • Snap the strip rotate block from the neopixel under the forever. Set the rotate pixels to 1 and set the LEDs change its colour one by one.

  • Then, snap a strip show block for colourful light.

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Program

Program link:https://makecode.microbit.org/_Ukp8C5M2dbr2

You also could directly download program by visiting website as below:

Result

The christmas tree rainbow LED glows colourful light to bring beauty to the christmas night.

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5.5. FAQ